"The Zionist Congresse" Jewish Virtual Library http://www.jewishvirtuallibrary.org/jsource/Zionism/congstoc.html
The Zionist Congress is the supreme institution and legislature of the World Zionist Organization (WZO). The WZO was founded at the First Zionist Congress (1897) as part of the first approved Zionist program, known as the Basel Program.
World Zionist Congress